../ dmsp_15_ephemeris_20181112.txt 22-Jun-2023 00:38 109414 dmsp_16_ephemeris_20181112.txt 22-Jun-2023 00:38 109516 dmsp_17_ephemeris_20181112.txt 22-Jun-2023 00:38 109430 dmsp_18_ephemeris_20181112.txt 22-Jun-2023 00:38 109424